3-COLOR MESSENGER MDIS MAP PROJECTED MULTISPECTRAL RDR V1.0

Abstract ======== The Mercury Dual Imaging System (MDIS) consists of two cameras, a Wide Angle Camera (WAC) and a Narrow Angle Camera (NAC), mounted on a common pivot platform. This dataset includes 3-Color Multispectral Reduced Data Records for the WAC. The 3-Color Map Projected Multispectral RDR (MD3) data set consists of a 3-color map of northern and equatorial latitudes acquired during MESSENGER's Extended Mission, and includes I/F in the 3 filters used for this map. This product has higher spatial resolution than, and complements, an 8-color multispectral map acquired during the primary mission. This product is photometrically normalized to a solar incidence angle (i) = 30 degrees, emission angle (e) = 0 degrees, and phase angle (g) = 30 degrees at a spatial sampling of 128 pixels per degree. The map is divided into 'tiles', each representing the NW, NE, SW, or SE quadrant of one of the 13 non-polar or one of the 2 polar quadrangles or 'Mercury charts' already defined by the USGS. Each tile is composed of 3 bands corresponding to 3 of the 11 WAC filters. Each tile also contains backplanes describing ancillary information. The subset of 3 of 11 available multispectral filters samples both albedo and spectral slope over MDIS's wavelength range. The fewer colors than in the Primary Mission 8-color product is to balance the higher spatial resolution to manage data volume during acquisition.